Nucleotides are made of a phosphate group, a suger, and a nitrogenous base. which part of the molecule can differ between nucleotides?
a. the sugar
b. the phosphate group
c. the nitrogenous base
d. no change

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

i dont know it at allnow im just getting points at this pint